iTunes trouble in Linux. how do I dual boot Windows in Linux?

I recently bought the first season of "My Little Pony: Friendship is Magic" from iTunes, but I cannot play it on Ubuntu 11.10. Upon researching why on the Internet, I later found that iTunes encrypts all of their videos so that it can only play in authorized systems. I currently cannot find a way to decrypt the videos, but I did that it uses the same algorithm of encrypting songs on the AAC audio stream, and that there is a legal controversy over encryption or decryption of DRM media. Because I cannot access the videos in Linux, I have to boot into my separate Windows 7 partition just to pony.